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Cisco ONS 15454 DWDM Installation and Operations Guide, R6.0
August 2005
Chapter 18 Network Reference
18.8.2 System Level Gain Tilt Control
Figure 18-17 MetroPlanner Installation Parameters
18.8.2.2 System Gain Tilt Compensation With ROADM Nodes
When an ROADM Node is present in the network, as shown in Figure 18-18, a per-channel dynamic gain
equalization can be performed. Both gain tilt and gain ripple are completely compensated using the
following techniques:
• Implementing the per-channel VOAs present inside the 32-WSS, and
• Operating in Power Control Mode with the specific power setpoint designed by MetroPlanner.
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